A graphite electrode screwing butt-joint device and a butt-joint method

Abstract

The present invention discloses a graphite electrode screwing and docking device and a docking method, belonging to the technical field of graphite electrode screwing devices. Among them, the graphite electrode screwing and docking device includes a turntable. On one side of the turntable, two clamping plates for clamping the electrode head are fixedly arranged. A jack is provided on the outer surface of the electrode head. An insertion block matching with the jack is arranged on the inner wall of the clamping plate, and a guiding groove is provided on the inner wall of the clamping plate. According to the characteristic that the outer surface of the electrode head is a conical surface, this device specifically sets the structure of the insertion block, and the insertion block can slide relative to the clamping plate. During the process of the clamping plate approaching the electrode head, the insertion block can automatically insert into the jack, so that the electrode head can be stably clamped between the two clamping plates. During the process of the clamping plate leaving the electrode head, the insertion block can automatically leave the jack, which is beneficial to the separation of the clamping plate from the electrode head. Therefore, this device simplifies the steps of electrode head docking and installation and greatly improves the installation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of graphite electrode screwing devices, and particularly relates to a graphite electrode screwing and docking device and a docking method. Background Technique

[0002] Graphite electrodes are widely used in the metal smelting industry. The graphite electrodes used in electric arc furnaces mainly consist of an electrode body and an electrode joint. The graphite electrode joint is a fitting for the graphite electrode and is used in conjunction with the graphite electrode.

[0003] Chinese Patent CN219132193U discloses a docking device for graphite electrode joints. The docking of the graphite electrode and the electrode joint is achieved through a moving structure. The operation is simple and fast, effectively reducing the labor intensity and at the same time reducing the safety hazard, making the docking of the graphite electrode more firm.

[0004] The above device clamps the graphite electrode head through the cooperation of a threaded sleeve and a clamping rod. However, in the actual use process, the two mutually cooperating threaded sleeves need to be able to move relative to each other to achieve the clamping of the electrode head. Moreover, during the installation process, the threaded sleeve needs to be able to move horizontally to install the electrode head, which requires multiple sets of driving components to promote the threaded sleeve to move in the vertical and horizontal directions, making the overall operation relatively complex. In summary, the above device still has room for improvement.

[0005] Therefore, it is necessary to provide a graphite electrode screwing and docking device and a docking method to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a graphite electrode screwing and docking device and a docking method to solve the problem that the existing device clamps the graphite electrode head through the cooperation of a threaded sleeve and a clamping rod. However, in the actual use process, the two mutually cooperating threaded sleeves need to be able to move relative to each other to achieve the clamping of the electrode head. Moreover, during the installation process, the threaded sleeve needs to be able to move horizontally to install the electrode head, which requires multiple sets of driving components to promote the threaded sleeve to move in the vertical and horizontal directions, making the overall operation relatively complex.

[0007] Based on the above ideas, the present invention provides the following technical solution: A graphite electrode screwing and docking device, including a turntable, two clamping plates for clamping the electrode head are fixedly arranged on one side of the turntable. A jack is provided on the outer surface of the electrode head. An insertion block matching the jack is arranged on the inner wall of the clamping plate. A guiding groove is provided on the inner wall of the clamping plate. A guiding block slidably matched with the guiding groove is fixedly arranged on the end face of the insertion block close to the clamping plate.

[0008] One end of the guiding groove close to the turntable is provided with a clamping component which is matched with the guiding block. When the inserting block contacts the inner wall of the inserting hole, the inserting block is limited by the inserting hole, so that when the clamping plate moves relative to the pole head, the inserting block can move towards the turntable relative to the clamping plate. When the clamping plate is attached to the pole head, the guiding block moves to one end of the guiding groove close to the turntable and is clamped with the clamping plate through the clamping component, so that the pole head is stably clamped between the two clamping plates.

[0009] As a further scheme of the present invention: the clamping component includes a clamping block arranged on the inner top wall of the guiding groove and elastically matched with the clamping plate. A limiting block is arranged on one side of the clamping block and elastically matched with the clamping plate. A limiting groove matched with the limiting block is formed on the side surface of the clamping block. A sliding plate is slidably assembled on the inner top wall of the guiding groove, and a traction rope is fixedly arranged between the sliding plate and the limiting block.

[0010] As a further scheme of the present invention: a clamping groove matched with the clamping block is formed on the top end surface of the guiding block. A magnetic plate is fixedly embedded on the top surface of the guiding block on one side of the clamping groove. The sliding plate is made of iron. An inclined surface is arranged on the top of the guiding block and close to one side of the clamping block.

[0011] As a further scheme of the present invention: a rotating shaft is arranged on one side of the turntable away from the clamping plate. The rotating shaft passes through the turntable and can rotate relative to the turntable. A shaft sleeve is fixedly installed on the side surface of the turntable away from the clamping plate. The shaft sleeve is sleeved outside the rotating shaft. A positioning block is elastically connected to the outer peripheral wall of the rotating shaft. A positioning groove matched with the positioning block is formed on the inner wall of the shaft sleeve. One end of the positioning block inserted into the positioning groove is spherical.

[0012] As a further scheme of the present invention: two magnetic strips are fixedly embedded on the outer peripheral wall of the rotating shaft. A through hole matched with the rotating shaft is formed at the center of the turntable. The magnetic strips are located at the through hole. A pulling block is slidably assembled on the inner wall of the through hole. The pulling block is made of iron. A pulling rope is fixedly arranged between the pulling block and the clamping block. When the positioning block is matched with the positioning groove, the pulling block is located between the two magnetic strips.

[0013] As a further scheme of the present invention: the number of the inserting holes is set to two.

[0014] As a further scheme of the present invention: an installation groove for slidably matching with the pulling block is formed on the inner wall of the through hole.

[0015] As a further scheme of the present invention: the cross sections of both the guiding block and the guiding groove are set to be T-shaped.

[0016] As a further scheme of the present invention: the two clamping plates are symmetrically arranged about the center of the turntable. The clamping plates are inclined relative to the turntable, and the inner and outer surfaces of the clamping plates are both arc surfaces.

[0017] A method for screwing and docking using the above-mentioned graphite electrode screwing and docking device includes the following steps: Push the whole device to move to the pole head, so that the insertion block on the clamping plate is aligned with the insertion hole on the pole head; Push the clamping plate in the direction close to the pole head. When the insertion block fits with the insertion hole, as the clamping plate fits on the outer surface of the pole head, the insertion block can be inserted into the insertion hole, so that the pole head is clamped between the two clamping plates; Push the device to move to the graphite electrode, insert the pole head into the graphite electrode, and screw the pole head into the graphite electrode by rotating the turntable.

[0018] Compared with the prior art, the beneficial effect of the present invention is that: According to the characteristic that the outer surface of the pole head is a conical surface, this device specifically sets the structure of the insertion block, and the insertion block can slide relative to the clamping plate. During the process of the clamping plate approaching the pole head, the insertion block can automatically be inserted into the insertion hole, so that the pole head can be stably clamped between the two clamping plates. And during the process of the clamping plate leaving the pole head, the insertion block can automatically leave the insertion hole, which is beneficial to the separation of the clamping plate and the pole head. Therefore, this device simplifies the steps of pole head docking and installation, and greatly improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings and embodiments:

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the structural schematic diagram of the connection between the clamping plate and the turntable of the present invention;

[0022] Figure 3 is the present invention Figure 2 The enlarged structural schematic diagram at A of;

[0023] Figure 4 is the sectional view of the clamping plate and the turntable of the present invention;

[0024] Figure 5 is the present invention Figure 4 The enlarged structural schematic diagram at B of;

[0025] Figure 6 is the present invention Figure 4 The enlarged structural schematic diagram at C of;

[0026] Figure 7 is the structural schematic diagram of the pole head of the present invention;

[0027] Figure 8 is the structural schematic diagram of the magnetic strip of the present invention;

[0028] Figure 9 is the schematic diagram when the insertion block fits with the inner wall of the insertion hole of the present invention;

[0029] Figure 10It is a schematic diagram of the magnet position of the present invention.

[0030] In the figure: 1, bottom plate; 2, driving gear; 3, rotating shaft; 301, chute; 4, guard plate; 5, screw; 6, screw sleeve; 7, turntable; 8, bushing; 9, clamping plate; 901, guiding groove; 10, pole head; 1001, jack; 11, graphite electrode; 12, support cylinder; 13, sliding sleeve; 1301, sliding bar; 14, insertion block; 1401, guiding block; 15, pulling rope; 16, positioning block; 1601, spherical surface; 17, magnetic strip; 18, pulling block; 19, magnetic plate; 20, clamping groove; 21, inclined surface; 22, towing rope; 23, sliding plate; 24, clamping block; 25, limiting block; 26, magnet. Detailed implementation manner

[0031] As Figures 1 - 10 shown, a graphite electrode screwing and docking device and a docking method include a turntable 7 and two clamping plates 9 arranged on one side of the turntable 7. The clamping plates 9 are fixedly connected to the turntable 7. During actual use, one end of the pole head 10 to be screwed is inserted between the two clamping plates 9. The pole head 10 is inserted into the end of the graphite electrode 11 through the clamping plates 9. The turntable 7 can drive the clamping plates 9 to rotate, so that the pole head 10 can be driven by the clamping plates 9 to rotate, enabling the pole head 10 to be screwed to one end of the graphite electrode 11. The two clamping plates 9 are centrosymmetric about the center of the turntable 7. Combining Figure 1 shown, the clamping plate 9 is inclined relative to the turntable 7 and the inner and outer surfaces of the clamping plate 9 are both arc surfaces, so that the clamping plate 9 can fit on the surface of the pole head 10;

[0032] Referring to Figure 7 shown, jacks 1001 are provided on the outer surface of the pole head 10. The number of the jacks 1001 is set to two. The cross-section of the jacks 1001 can be circular or rectangular. Combining Figures 2 - 6 shown, insertion blocks 14 that cooperate with the jacks 1001 are slidably arranged on the inner wall of the clamping plate 9. Combining Figure 3 shown, the end faces at both ends of the insertion block 14 can be arc surface structures;

[0033] Specifically, guiding grooves 901 are provided on the inner wall of the clamping plate 9, and guiding blocks 1401 that are slidably matched with the guiding grooves 901 are fixedly arranged at one end face of the insertion block 14 close to the clamping plate 9. The cross-sections of the guiding blocks 1401 and the guiding grooves 901 are both set to be T-shaped. A clamping component that cooperates with the guiding block 1401 is arranged at one end of the guiding groove 901 close to the turntable 7. Since the outer surface of the pole head 10 is a conical surface structure, therefore, during the process that the clamping plate 9 gradually approaches the pole head 10, the insertion block 14 can gradually approach the jack 1001. Referring to Figure 9As shown, when the insertion block 14 contacts the higher side of the jack 1001, the insertion block 14 is limited, so that during the process of the clamping plate 9 moving relative to the pole head 10, the insertion block 14 can move towards the turntable 7 relative to the clamping plate 9. Combining Figure 4 As shown, when the clamping plate 9 fits with the pole head 10, the guiding block 1401 moves to one end of the guiding groove 901 close to the turntable 7 and is clamped with the clamping plate 9 through the clamping component. At this time, the pole head 10 is stably clamped between the two clamping plates 9.

[0034] In order to drive the turntable 7 to rotate, a rotating shaft 3 is arranged on the side of the turntable 7 away from the clamping plate 9 in this solution. The rotating shaft 3 passes through the turntable 7 and can rotate relative to the turntable 7. During actual use, when the pole head 10 is completely screwed into the graphite electrode 11, the acting force between the rotating shaft 3 and the turntable 7 can increase, causing the rotating shaft 3 to rotate relative to the turntable 7. During this process, the clamping component is disengaged from the guiding block 1401, enabling the guiding block 1401 to slide in the guiding groove 901 again. At this time, when the turntable 7 is moved away from the pole head 10, the insertion block 14 can move away from the pole head 10 and finally disengage from the pole head 10. Thus, the clamping plate 9 screws the pole head 10 into the graphite electrode 11 and the clamping plate 9 can be separated from the pole head 10 along with the trend.

[0035] As Figures 1 - 10 As shown, the clamping component includes a clamping block 24 arranged on the inner top wall of the guiding groove 901 and elastically cooperating with the clamping plate 9. A limiting block 25 is arranged on one side of the clamping block 24. Specifically, the limiting block 25 elastically cooperates with the clamping plate 9, and a limiting groove cooperating with the limiting block 25 is formed on the side surface of the clamping block 24. In the initial state, one end of the limiting block 25 is inserted into the limiting groove to lock the clamping block 24.

[0036] A sliding plate 23 is slidably assembled on the inner top wall of the guiding groove 901. A traction rope 22 is fixedly arranged between the sliding plate 23 and the limiting block 25. The traction rope 22 passes through the clamping plate 9 and is slidably matched with it.

[0037] The top end face of the guiding block 1401 is provided with a clamping groove 20 that cooperates with the clamping block 24. In addition, a magnetic plate 19 is fixedly embedded on the top surface of the guiding block 1401 on one side of the clamping groove 20. The above-mentioned sliding plate 23 is made of iron. On the top of the guiding block 1401 and on the side close to the clamping block 24, there is an inclined surface 21. During actual use, when the guiding block 1401 slides along the guiding groove 901 to the sliding plate 23, the suction force of the magnetic plate 19 on the sliding plate 23 can pull the traction rope 22, thereby pulling the limiting block 25 through the traction rope 22, so that the clamping block 24 can pop outwards. As the guiding block 1401 continues to slide down along the guiding groove 901, the inclined surface 21 can squeeze the clamping block 24 to move upwards. When the clamping groove 20 is aligned with the clamping block 24, the clamping block 24 can pop out and insert into the clamping groove 20 to lock the guiding block 1401 and prevent the inserting block 14 from moving relative to the clamping plate 9. Since one end of the inserting block 14 is inserted into the jack 1001 on the pole head 10, when the inserting block 14 is locked with the clamping plate 9, the pole head 10 can be stably located between the two clamping plates 9.

[0038] On the side surface of the turntable 7 away from the clamping plate 9, a bushing 8 is fixedly installed. The bushing 8 is sleeved on the outer side of the rotating shaft 3. The rotating shaft 3 is rotationally matched with the bushing 8 through a bearing. Specifically, a positioning block 16 is elastically connected to the outer peripheral wall of the rotating shaft 3, and a positioning groove that cooperates with the positioning block 16 is provided on the inner wall of the bushing 8. One end of the positioning block 16 inserted into the positioning groove is a spherical surface 1601. With this structure, when the pressure between the rotating shaft 3 and the bushing 8 increases, one end of the positioning block 16 can move out of the positioning groove;

[0039] Two magnetic strips 17 are fixedly embedded on the outer peripheral wall of the rotating shaft 3. Refer to Figure 8 As shown, the magnetic strip 17 is in an arc shape, and the outer surface of the magnetic strip 17 is parallel to the outer wall of the rotating shaft 3. Combining Figure 4 As shown, a through hole that cooperates with the rotating shaft 3 is provided at the center of the turntable 7, and the magnetic strip 17 is located at the through hole. A pulling block 18 is slidably assembled on the inner wall of the through hole. The pulling block 18 is made of iron. In the initial state, the pulling block 18 is between the two magnetic strips 17. A pulling rope 15 is fixedly arranged between the pulling block 18 and the clamping block 24. The pulling rope 15 passes through the clamping plate 9 and the turntable 7 and is slidably matched with both of them. When the positioning block 16 cooperates with the positioning groove, the pulling block 18 is between the two magnetic strips 17.

[0040] During actual use, move the clamping plate 9 to one side of the pole head 10 so that the inserting block 14 inside the clamping plate 9 and the jack 1001 on the pole head 10 are on the same straight line. Push the device close to the pole head 10 so that the clamping plate 9 gradually fits on the outer surface of the pole head 10. In the initial state, the inserting block 14 is located at one end of the clamping plate 9 away from the turntable 7. Combining Figure 9As shown in the figure, since the outer surface of the pole head 10 is a conical structure, there is a certain drop in the projection of the top edge of the jack 1001 on the vertical plane. Therefore, during the process of the insertion block 14 approaching the jack 1001, the insertion block 14 will eventually contact the higher side of the jack 1001. At this time, the insertion block 14 will not continue to move with the clamping plate 9, but as the clamping plate 9 continues to approach the pole head 10, the inclined clamping plate 9 can squeeze the insertion block 14 to move downward, so that the insertion block 14 gradually inserts into the jack 1001. Specifically, when the clamping plate 9 is attached to the pole head 10, the guide block 1401 can slide to one end of the guide groove 901 close to the turntable 7. According to the above analysis, when the magnetic plate 19 on the guide block 1401 is aligned with the sliding plate 23, the magnetic plate 19 can adsorb the sliding plate 23 to move downward, and the sliding plate 23 pulls the limit block 25 through the traction rope 22 so that the limit block 25 is disengaged from the clamping block 24. As a result, the clamping block 24 can pop out. After that, when the guide block 1401 continues to slide downward so that the clamping block 24 is aligned with the card slot 20, the clamping block 24 can be inserted into the card slot 20. At this point, the insertion block 14 is locked with the clamping plate 9, and the pole head 10 can also be stably clamped between the two clamping plates 9;

[0041] Move the device to one end of the graphite electrode 11, insert one end of the pole head 10 into the graphite electrode 11. In the initial state, one end of the positioning block 16 is inserted into the positioning groove, so that the rotating shaft 3 can drive the turntable 7 to rotate. Through the cooperation of the insertion block 14 and the jack 1001, the clamping plate 9 can drive the pole head 10 to rotate, so as to realize the screw connection between the pole head 10 and the graphite electrode 11. When the pole head 10 is completely screwed into the graphite electrode 11, the pole head 10 will no longer move. In this state, as the rotating shaft 3 continues to rotate, the pressure between the positioning block 16 and the positioning groove increases. As a result, one end of the positioning block 16 can move out of the positioning groove. When the rotating shaft 3 rotates relative to the turntable 7, the magnetic strip 17 can be aligned with the pulling block 18. The suction force of the magnetic strip 17 on the pulling block 18 can drive the pulling block 18 to move towards the direction close to the rotating shaft 3. During this process, the pulling block 18 can pull the clamping block 24 to move upward through the pulling rope 15. Combining Figure 6 with what is described above, after the clamping block 24 moves upward so that the limit block 25 is aligned with the limit groove, the limit block 25 can pop out and be inserted into the limit groove, thereby locking the clamping block 24 again. After the clamping block 24 is separated from the card slot 20, the insertion block 14 can move relative to the clamping plate 9. At this time, the staff only needs to pull the rotating shaft 3 in the direction away from the pole head 10. Referring to Figure 9 the figure shown, as the rotating shaft 3 drives the clamping plate 9 to gradually move away from the pole head 10, the guide groove 901 forms an upward thrust on the guide block 1401, so that the inclined clamping plate 9 can drive the insertion block 14 to move away from the pole head 10 until it completely leaves the jack 1001. At this point, the pole head 10 is completely installed on the graphite electrode 11 through the clamping plate 9, and the clamping plate 9 can also be quickly separated from the pole head 10.

[0042] In summary, according to the characteristic that the outer surface of the pole head 10 is a conical surface, the device specifically sets the structure of the insertion block 14, and the insertion block 14 can slide relative to the clamping plate 9. During the process of the clamping plate 9 approaching the pole head 10, the insertion block 14 can automatically insert into the jack 1001, so that the pole head 10 can be stably clamped between the two clamping plates 9. During the process of the clamping plate 9 leaving the pole head 10, the insertion block 14 can automatically leave the jack 1001, which is beneficial to the separation of the clamping plate 9 from the pole head 10. Therefore, this device simplifies the docking and installation steps of the pole head 10 and greatly improves the installation efficiency.

[0043] As Figures 1 - 10 shown, a sliding sleeve 13 is slidably sleeved outside the rotating shaft 3. Specifically, a sliding strip 1301 is fixedly arranged at the inner wall of the sliding sleeve 13, and a sliding groove 301 that slidably cooperates with the sliding strip 1301 is formed at the outer wall of the rotating shaft 3. Through this structure, while the sliding sleeve 13 drives the rotating shaft 3 to rotate, it can also slide relative to the rotating shaft 3. A support cylinder 12 is rotatably sleeved outside the sliding sleeve 13. A boss is fixedly installed at the outer wall of the support cylinder 12, and a screw sleeve 6 is arranged at the boss. Specifically, the screw sleeve 6 passes through the boss and is fixedly connected to it. A screw rod 5 is arranged inside the screw sleeve 6. The screw rod 5 passes through the screw sleeve 6 and is in threaded cooperation with it. A bottom plate 1 is arranged at the bottom end of the screw rod 5. A pulley is installed at the bottom surface of the bottom plate 1, which is beneficial to the overall movement of the device. L-shaped guard plates 4 are fixedly arranged on both sides of the top of the bottom plate 1. Both ends of the screw rod 5 are in a smooth rod structure and are respectively in rotational cooperation with the bottom plate 1 and the guard plate 4. A straight gear is fixedly sleeved at the bottom end of the screw rod 5, and a driving gear 2 is rotatably installed at the top of the bottom plate 1. The driving gear 2 meshes with the straight gear. Through the meshing of the driving gear 2 and the straight gear, the screw rod 5 can be driven to rotate, so as to drive the turntable 7 to move in the vertical plane.

[0044] A rotating wheel is fixedly sleeved at one end of the sliding sleeve 13 that passes through the support cylinder 12. Through the rotating wheel, the sliding sleeve 13 can be rotated more conveniently, and then the rotating shaft 3 can be driven to rotate.

[0045] A groove that slidably cooperates with the positioning block 16 is formed at the outer wall of the rotating shaft 3. A first spring is fixedly arranged between the inner end face of the groove and the positioning block 16. An installation groove that slidably cooperates with the pulling block 18 is formed at the inner wall of the through hole. A notch that slidably cooperates with the clamping block 24 is formed at the top wall of the guide groove 901. A limiting spring is fixedly arranged between the inner end face of the notch and the clamping block 24, and a rectangular groove that slidably cooperates with the limiting block 25 is formed at the inner wall of the notch. A second spring is fixedly arranged between the inner end face of the rectangular groove and the limiting block 25. In addition, a strip-shaped groove that slidably cooperates with the sliding plate 23 is also formed at the top wall of the guide groove 901.

[0046] As Figures 3 - 6 、 Figure 10As shown, magnets 26 are fixedly embedded on the side of the guide block 1401 away from the turntable 7 and the end face of the guide groove 901 away from the turntable 7. The opposite sides of the two magnets 26 have different magnetic poles. Specifically, when the clamping plate 9 leaves the pole head 10 and the guide block 1401 gradually moves to the end of the guide groove 901 away from the turntable 7, the suction force between the two magnets 26 can further drive the guide block 1401 to move upward relative to the clamping plate 9, thereby promoting the separation of the insertion block 14 from the insertion hole 1001.

Claims

1. A graphite electrode screwing and docking device, comprising a turntable, two clamping plates for clamping the electrode head are fixedly arranged on one side of the turntable, jacks are arranged on the outer surface of the electrode head, and inserting blocks matched with the jacks are arranged on the inner walls of the clamping plates, and the device is characterized in that: A guiding groove is formed in the inner wall of the clamping plate, and a guiding block slidably engaged with the guiding groove is fixedly arranged at the end face of the inserting block close to the clamping plate; A clamping component matched with the guiding block is arranged at one end of the guiding groove close to the turntable. When the inserting block contacts the inner wall of the jack, the inserting block is limited by the jack, so that when the clamping plate moves relative to the pole head, the inserting block can move towards the turntable relative to the clamping plate. When the clamping plate fits with the pole head, the guiding block moves to one end of the guiding groove close to the turntable and is clamped with the clamping plate through the clamping component, so that the pole head is stably clamped between the two clamping plates; The clamping component includes a clamping block arranged on the inner top wall of the guiding groove and elastically matched with the clamping plate. A limiting block is arranged on one side of the clamping block and elastically matched with the clamping plate. A limiting groove matched with the limiting block is formed in the side surface of the clamping block. A sliding plate is slidably assembled on the inner top wall of the guiding groove, and a traction rope is fixedly arranged between the sliding plate and the limiting block; A clamping groove matched with the clamping block is formed in the top end face of the guiding block. A magnetic plate is fixedly embedded on one side of the top surface of the guiding block where the clamping groove is located. The sliding plate is made of iron, and an inclined surface is arranged on one side of the top of the guiding block close to the clamping block; A rotating shaft is arranged on the side of the turntable away from the clamping plate. The rotating shaft passes through the turntable and can rotate relative to the turntable. A shaft sleeve is fixedly installed on the side surface of the turntable away from the clamping plate. The shaft sleeve is sleeved outside the rotating shaft. A positioning block is elastically connected to the outer peripheral wall of the rotating shaft. A positioning groove matched with the positioning block is formed in the inner wall of the shaft sleeve. The end of the positioning block inserted into the positioning groove is spherical; Two magnetic strips are fixedly embedded on the outer peripheral wall of the rotating shaft. A through hole matched with the rotating shaft is formed in the center of the turntable. The magnetic strips are located at the through hole. A pulling block is slidably assembled on the inner wall of the through hole. The pulling block is made of iron. A pulling rope is fixedly arranged between the pulling block and the clamping block. When the positioning block is matched with the positioning groove, the pulling block is located between the two magnetic strips.

2. The graphite electrode screwing and butting device according to claim 1, characterized in that: The number of the jacks is set to two.

3. The graphite electrode screwing and butting device according to claim 2, characterized in that: An installation groove slidably matched with the pulling block is formed in the inner wall of the through hole.

4. A graphite electrode screwing and docking device according to claim 1, characterized in that: The cross sections of the guiding block and the guiding groove are both T-shaped.

5. The graphite electrode screwing and butting device according to claim 1, characterized in that: The two clamping plates are symmetrically arranged about the center of the turntable. The clamping plates are inclined relative to the turntable, and the inner and outer surfaces of the clamping plates are both arc surfaces.

6. A method for screwing and docking using the graphite electrode screwing and docking device according to any one of claims 1-5, characterized in that, The following steps are included: pushing the whole device to move to the pole head so that the inserting block on the clamping plate is aligned with the jack on the pole head; pushing the clamping plate towards the pole head. When the inserting block fits with the jack, as the clamping plate fits with the outer surface of the pole head, the inserting block can be inserted into the jack, so that the pole head is clamped between the two clamping plates; pushing the device to move to the graphite electrode, inserting the pole head into the graphite electrode, and screwing the pole head into the graphite electrode by rotating the turntable.

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